Indoor ficus like the bright light of southern exposures. The Ficus family includes a large number of species including the rubber plant (Ficus elastica), weeping fig (Ficus benjamina) and fiddle-leaf fig (Ficus lyrata).Ficus grown as houseplants are much smaller than their outdoor counterparts, which grow in U.S. Department of Agriculture plant hardiness zones 10 through 12.Most ficus grown indoors are woody tree-like plants with single or multi-stemmed trunks.he Ficus family includes a large number of species including the rubber plant (Ficus elastica), weeping fig (Ficus benjamina) and fiddle-leaf fig (Ficus lyrata).
An early form of circuit breaker was described by Thomas Edison in an 1879 patent application, although his commercial power distribution system used fuses. Its purpose was to protect lighting circuit wiring from accidental short circuits and overloads.
Arthur Scherbius, a German engineer, developed his 'Enigma' machine, capable of transcribing coded information, in the hope of interesting commercial companies in secure communications. In 1923 he set up his Chiffriermaschinen Aktiengesellschaft (Cipher Machines Corporation) in Berlin to manufacture his product.hoto: A four-rotor German Enigma cipher machine made during WW2. This rare machine is thought to have been used in the post-war years for coding Swiss diplomatic traffic. (SSPL/Getty Images).